The formula for the rate is:
[tex]\text{Rate}=\frac{\text{Distance}}{\text{Time}}[/tex]Substitute for the distance equal to 3 and the time equal to 2:
[tex]\begin{gathered} \text{Rate}=\frac{3}{2} \\ =1.5 \end{gathered}[/tex]Therefore, you should swim at 1.5 km per hour.
